darkcloud | 39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2

System Information Discovery

Processes:

Synaptics.exe39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	Synaptics.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe

Executes dropped EXE 4 IoCs

Processes:

._cache_39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exeSynaptics.exeSynaptics.exe._cache_Synaptics.exe

pid	process
1320	._cache_39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
2228	Synaptics.exe
2424	Synaptics.exe
4232	._cache_Synaptics.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe"	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exeSynaptics.exe

description	pid	process	target process
PID 2848 set thread context of 2380	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2228 set thread context of 2424	2228	Synaptics.exe	Synaptics.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe._cache_39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exeSynaptics.exeSynaptics.exe._cache_Synaptics.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_Synaptics.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Modifies registry class 2 IoCs

Processes:

39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exeSynaptics.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3368 EXCEL.EXE

pid	process
3368	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exeSynaptics.exe

pid	process
2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
2228	Synaptics.exe
2228	Synaptics.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exeSynaptics.exe

description	pid	process
Token: SeDebugPrivilege	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
Token: SeDebugPrivilege	2228	Synaptics.exe

Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

._cache_39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe._cache_Synaptics.exeEXCEL.EXE

pid	process
1320	._cache_39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
4232	._cache_Synaptics.exe
3368	EXCEL.EXE
3368	EXCEL.EXE
3368	EXCEL.EXE
3368	EXCEL.EXE
3368	EXCEL.EXE
3368	EXCEL.EXE

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exeSynaptics.exeSynaptics.exe

description	pid	process	target process
PID 2848 wrote to memory of 2380	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2848 wrote to memory of 2380	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2848 wrote to memory of 2380	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2848 wrote to memory of 2380	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2848 wrote to memory of 2380	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2848 wrote to memory of 2380	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2848 wrote to memory of 2380	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2848 wrote to memory of 2380	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2848 wrote to memory of 2380	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2848 wrote to memory of 2380	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2848 wrote to memory of 2380	2848	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2380 wrote to memory of 1320	2380	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	._cache_39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2380 wrote to memory of 1320	2380	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	._cache_39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2380 wrote to memory of 1320	2380	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	._cache_39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
PID 2380 wrote to memory of 2228	2380	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	Synaptics.exe
PID 2380 wrote to memory of 2228	2380	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	Synaptics.exe
PID 2380 wrote to memory of 2228	2380	39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe	Synaptics.exe
PID 2228 wrote to memory of 2424	2228	Synaptics.exe	Synaptics.exe
PID 2228 wrote to memory of 2424	2228	Synaptics.exe	Synaptics.exe
PID 2228 wrote to memory of 2424	2228	Synaptics.exe	Synaptics.exe
PID 2228 wrote to memory of 2424	2228	Synaptics.exe	Synaptics.exe
PID 2228 wrote to memory of 2424	2228	Synaptics.exe	Synaptics.exe
PID 2228 wrote to memory of 2424	2228	Synaptics.exe	Synaptics.exe
PID 2228 wrote to memory of 2424	2228	Synaptics.exe	Synaptics.exe
PID 2228 wrote to memory of 2424	2228	Synaptics.exe	Synaptics.exe
PID 2228 wrote to memory of 2424	2228	Synaptics.exe	Synaptics.exe
PID 2228 wrote to memory of 2424	2228	Synaptics.exe	Synaptics.exe
PID 2228 wrote to memory of 2424	2228	Synaptics.exe	Synaptics.exe
PID 2424 wrote to memory of 4232	2424	Synaptics.exe	._cache_Synaptics.exe
PID 2424 wrote to memory of 4232	2424	Synaptics.exe	._cache_Synaptics.exe
PID 2424 wrote to memory of 4232	2424	Synaptics.exe	._cache_Synaptics.exe

C:\Users\Admin\AppData\Local\Temp\39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
"C:\Users\Admin\AppData\Local\Temp\39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Users\Admin\AppData\Local\Temp\39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
  "C:\Users\Admin\AppData\Local\Temp\39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2380
- - C:\Users\Admin\AppData\Local\Temp\._cache_39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_39b71735c29ae5e9ec286aae7d645109d241a76007c23db531878d5daad2f9a2N.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:1320
- - C:\ProgramData\Synaptics\Synaptics.exe
    "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2228
  - - C:\ProgramData\Synaptics\Synaptics.exe
      "C:\ProgramData\Synaptics\Synaptics.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Modifies registry class
      Suspicious use of WriteProcessMemory
      PID:2424
    - - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
        
        "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:4232

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:3368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery